TEW4977 [FILTRAN]
CEPT/T1 Input/Output Transformer; CEPT / T1输入/输出变压器
| 型号： | TEW4977 |
| 厂家： | 
FILTRAN LTD |
| 描述： | CEPT/T1 Input/Output Transformer |
| 文件： | 总1页 (文件大小：46K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
CEPT/T1
Input/Output Transformer
TEW4977
TEW4977 & -1 are designed and
approved to be used
as an Input transformer with the
following devices.
Fully encapsulated in epoxy.
Typical applications are:
•
•
•
•
Primary rate ISDN network
nodes.
Crystal
CS61534, 61535, 61574,
6158, 61535A, 61574A,
61575, 6158A.
PBX or computer to T1/CEPT
Digital trunks.
Level One LXT 300, 301, 305,
304A,305A
High speed data link using
T1/CEPT Digital trunk.
Also as an Output transformer for:
TDM Multiplexers.
Crystal
6158.
CS61534, 61535, 61574 &
Level One LXT 300, 301, 305
BABT certified for reinforced insulation
to EN60950 & EN41003
TEW4977-2 is designed to be used as
an Output transformer, and
Cert # CR/T/0052
TEW4977-3 as an Input trf. for:
Brooktree BT8069B device
MECHANICAL
6
Line side
4
1
2 Device
3
WHITE
DOT
AT PIN 1
All dimensions
are in inches
ELECTRICAL SPECIFICATION
TEW4977
-1
-2
-3
-4
Line Impedance
DCR
(Ohms)
(Ohms)
75, 100
& 120
75
75, 100
& 120
75, 100
& 120
75 & 120
(1 - 3)
(6 - 4)
1.15 nom.
0.60 nom.
1.6
0.8
0.7 nom
1.2 nom
0.7 nom
0.7 nom
1.2 nom
0.7 nom
Turns ratio
(6 - 4) : (1 - 3)
(6 : 4) : (1 - 2)
1 : 2 c.t.
—-
1 : 2 c.t.
—-
2 : 1 c.t.
—-
1 : 1
—-
1 : 2
1 : 1.58
Inductance
(mH)
(6 - 4)
> 1.2
> 0 .8
I.431
> 4.8
> 1.2
> 1.2
I.431
Longitud. Bal.
T1.408
I.431
T1.408
I.431
T1.408
I.431
Return Loss
T1.40
G.703
G.703
BS6328
n/a
G.703
G.703
4000
Dielectric Strength
(Vrms)
4000
4000
4000
4000
Filtran Limited
229 Colonnade Road, Nepean, Ontario, Canada, K2E 7K3
Tel: (613) 226-1626 Fax: (613) 226-7124
2-18
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